will take his public oath, beginning his second term as president of the united states. it will happen on martin luther king day, no less. also a second time taking the oath of office in 24 hours. yesterday, the first lady and first daughters looking on, the president made good on a constitutional requirement. that he be sworn in on january 20th, as did vice president joseph biden. looking ahead as to what is happening today, president obama will be publicly sworn in 11:30 eastern and give his presidential address at noon and later in the afternoon, 2:35, he will lead the inaugural parade from the u.s. capitol down pennsylvania avenue to the white house. dan lothian following it all for us this morning. good morning, dan. >> good morning. it will be a busy day for the president today, after a busy weekend of a number of events. the president officially getting sworn in yesterday. but he begins the day today, about 8:45 this morning, heading across the street to the st. john's episcopal church, also known as the church of presidents where the first family has attended ser